These ''Sterling And Sparkle'' clip on earrings were designed with diamonds in mind, inlaid with a matrix of iridescent white opal by Leon Nussbaum, our London silversmith, and accented with cubic zirconia. Opal, considered ''the queen of gems,'' can flash patterns of color representing every hue of the rainbow as they flicker and change with every movement of the wearer. These opal and sterling silver earrings are adorned with 15 cubic zirconia of .10 carats each, making each piece a fantasy of lights. No two are exactly alike. Earrings measure approximately 0.75 inches long, clips. Handcrafted exclusively for Uno Alla Volta, from the heart and hands of the artisan.